title: A piecewise patch-to-model matching method for image-guided cardiac catheter ablation.
abstract: Accurate and fast fusion and display of real-time images of anatomy and associated data is critical for effective use in image guided procedures, including image guided cardiac catheter ablation. We have developed a piecewise patch-to-model matching method, a modification of the contractive projection point technique, for accurate and rapid matching between an intra-operative cardiac surface patch and a pre-operative cardiac surface model. Our method addresses the problems of fusing multi-modality images and using non-rigid deformation between a surface patch and a surface model. A projection lookup table, K-nearest neighborhood search, and a final iteration of point-to-projection are used to reliably find the surface correspondence. Experimental results demonstrate that the method is fast, accurate and robust for real-time matching of intra-operative surface patches to pre-operative 3D surface models of the left atrium.
authors.affiliation: College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, China. liujq@zju.edu.cn
authors.forename: Jiquan
authors.initials: J
authors.lastname: Liu
authors.forename: Maryam E
authors.initials: ME
authors.lastname: Rettmann
authors.forename: David R
authors.initials: DR
authors.lastname: Holmes
authors.forename: Huilong
authors.initials: H
authors.lastname: Duan
authors.forename: Richard A
authors.initials: RA
authors.lastname: Robb
mesh_terms: D000465:Algorithms; D001145:Arrhythmias, Cardiac / Q000601:surgery*; D017115:Catheter Ablation; D006801:Humans; D021621:Imaging, Three-Dimensional; D019047:Phantoms, Imaging; D015641:Radiography, Interventional / Q000379:methods*; D025321:Surgery, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods*